Justin is interested in buying a digital phone. He visited 16 stores at random and recorded the price of the particular...
Justin is interested in buying a digital phone. He visited 16 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of 262.49 and a standard deviation of 27.57.
A) What t-score should be used for a 95% confidence interval for
the mean, μ, of the distribution?
t* = (____)
B) Calculate a 95% confidence interval for the mean price of
this model of digital phone:
(Enter the smaller value in the left answer box.)
(____) to (____)
Homework Answers
Add Answer to:
Justin is interested in buying a digital phone. He visited 16 stores at random and recorded the price of the particular...
Justin is interested in buying a digital phone. He visited 8 stores at random and recorded...
Justin is interested in buying a digital phone. He visited 8 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of 346.71 and a standard deviation of 11.8. (a) What t-score should be used for a 95% confidence interval for the mean, μ, of the distribution? t* = (b) Calculate a 95% confidence interval for the mean price of this model of digital phone: (Enter the smaller value in...
Justin is interested in buying a digital phone. He visited 12 stores at random and recorded...
Justin is interested in buying a digital phone. He visited 12 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of 342.25 and a standard deviation of 9.67. (a) What t-score should be used for a 95% confidence interval for the mean, ?, of the distribution? t* = (b) Calculate a 95% confidence interval for the mean price of this model of digital phone: (Enter the smaller value in...
(1 point) Justin is interested in buying a digital phone. He visited 17 stores at random...
(1 point) Justin is interested in buying a digital phone. He visited 17 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of $217.47 and a standard deviation of $20.75. (a) What critical value t* should be used for a 95% confidence interval for the mean, u, of the distribution? ** (b) Calculate a 95% confidence interval for the mean price of this model of digital phone: (Enter the...
youre amazing!! thank you for helping me in advance, i needed this (1 point) Justin is...
youre amazing!! thank you for helping me in advance, i needed
this
(1 point) Justin is interested in buying a digital phone. He visited 13 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of $184.07 and a standard deviation of $30.98. (a) What critical value re should be used for a 95% confidence interval for the mean, M.of the distribution? (b) Calculate a 95% confidence interval for the...
Homes for Sale A real estate agent is interested in the current housing prices in a...
Homes for Sale A real estate agent is interested in the current
housing prices in a particular neighborhood in New York. A random
sample of 30 homes for sale in the neighborhood was taken and the
current listed price of each home was recorded. The data can be
found in the JMP file “HomesForSale-NY-S2019.jmp”
(c) Report the degrees of
freedom associated with the t-distribution required to construct a
confidence interval for the mean for these data.
(d) Based on your...
3.Jethro’s BBQ Food Truck.Jethro’s BBQ is a local chain of restaurants located at centralIowa. Bruce, the...
3.Jethro’s BBQ Food Truck.Jethro’s BBQ is a local chain of restaurants located at centralIowa. Bruce, the owner of the restaurant located at Ames, is thinking about expanding his business using a food truck that would be located during weekdays at the ISU campus. One important aspect for the planning of such project is to determine what would be a reasonable price range for the food. The prices need to be appealing and affordable for college students and at the same...
Previous Problem Problem List Next Problem (1 point) In 2012, the percentage of cell phone owners...
Previous Problem Problem List Next Problem (1 point) In 2012, the percentage of cell phone owners who used their cell phone to send or receive text messages was 80 %. A polling firm contacted a simple random sample of 1300 people chosen from the population of cell phone owners. If p is the proportion of cell phone owners the mean for p who used their phone to text, then what was 0.011 Submit Answers Preview My Answers You have attempted...
A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol levels...
A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol levels for 18 patients were recorded before administering the drug and after. The mean difference in total cholesterol levels (after - before) was -8.603 mg/dL with a standard deviation of 5.449 mg/dL. When creating a 90% confidence interval for the true average difference in cholesterol levels by the drug, what is the margin of error? 1) 1.7087 2) 2.2271 3) 2.2342 4) 1.2843 5) 2.1127...
My Ask You C-reactive protein (CRP) is a substance that can be measured in the blood. Values incr...
My Ask You C-reactive protein (CRP) is a substance that can be measured in the blood. Values increase substantially within & hours of an infection and reach a peak within 24 to 48 hours after. In adults, chronically high values have been linked to an increased risk of cardiovascular disease. In a study of apparently healthy children aged 6 to 60 months in Papua New Guinea, CRP was measured in 90 children. The units are milligrams per liter (mg/l). Here...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question Provide an appropriate response. 1) Find the critical value,te for 0.99 and n-10. A) 3.250 B) 3.169 1.833 D) 2.262 2) Find the critical value to forc=0.95 and n=16. A) 2.947 B) 2.602 2120 D) 2.131 3) Find the value of E, the margin of error, for A) 1.69 B) 0.42 0.99, n=16 and s=2.6. C)...
(1 point) Justin is interested in buying a digital phone. He visited 17 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of $217.47 and a standard deviation of $20.75. (a) What critical value t* should be used for a 95% confidence interval for the mean, u, of the distribution? ** (b) Calculate a 95% confidence interval for the mean price of this model of digital phone: (Enter the...
youre amazing!! thank you for helping me in advance, i needed
this
(1 point) Justin is interested in buying a digital phone. He visited 13 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of $184.07 and a standard deviation of $30.98. (a) What critical value re should be used for a 95% confidence interval for the mean, M.of the distribution? (b) Calculate a 95% confidence interval for the...
Homes for Sale A real estate agent is interested in the current
housing prices in a particular neighborhood in New York. A random
sample of 30 homes for sale in the neighborhood was taken and the
current listed price of each home was recorded. The data can be
found in the JMP file “HomesForSale-NY-S2019.jmp”
(c) Report the degrees of
freedom associated with the t-distribution required to construct a
confidence interval for the mean for these data.
(d) Based on your...
Previous Problem Problem List Next Problem (1 point) In 2012, the percentage of cell phone owners who used their cell phone to send or receive text messages was 80 %. A polling firm contacted a simple random sample of 1300 people chosen from the population of cell phone owners. If p is the proportion of cell phone owners the mean for p who used their phone to text, then what was 0.011 Submit Answers Preview My Answers You have attempted...
My Ask You C-reactive protein (CRP) is a substance that can be measured in the blood. Values increase substantially within & hours of an infection and reach a peak within 24 to 48 hours after. In adults, chronically high values have been linked to an increased risk of cardiovascular disease. In a study of apparently healthy children aged 6 to 60 months in Papua New Guinea, CRP was measured in 90 children. The units are milligrams per liter (mg/l). Here...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question Provide an appropriate response. 1) Find the critical value,te for 0.99 and n-10. A) 3.250 B) 3.169 1.833 D) 2.262 2) Find the critical value to forc=0.95 and n=16. A) 2.947 B) 2.602 2120 D) 2.131 3) Find the value of E, the margin of error, for A) 1.69 B) 0.42 0.99, n=16 and s=2.6. C)...
Most questions answered within 3 hours.
-
5. Discuss the use of fault tree analysis (FTA) for risk
assessment (maximum one paragraph).
asked 57 minutes ago -
Given that a sample of aluminium oxide has a Young's modulus of
393 GPa and a...
asked 2 hours ago -
At a certain temperature, the equilibrium constant, Kc, for this
reaction is 53.3.
H2(g)+I2(g)−⇀↽−2HI(g)Kc=53.3
At this...
asked 3 hours ago -
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 4 hours ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 4 hours ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 6 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 6 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 7 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 7 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 8 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 8 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 8 hours ago